Tanning apparatus.



' No. 742,186. PATENTED OCT. 27, 1903.

A G. J. GLASBL.

TANNING APPARATUS.

APPLIUATION FILED FEB. 4, 1903.

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PATENTED OCT. 27, 1903.

0.]. GLASEL.

TANNING APPARATUS. APPLICATION FILED rm. 4. 1903.

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CHARLES J. GLASEL, OF BOSTON, MASSACHUSETTS.

TANNING APPARATUS.

SPECIFICATION forming part of Letters Patent N 0. 742,186, dated October 2'7, 1903.

4 Application filed February 4, 1903. Serial No. 141,788. or. model.)

To a, whom it may concern:

Be it known that I, CHARLES J. GLASEL, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Tanning-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to machines fortanning and coloring leather; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed.

In the drawings, Figure 1 is a side View of the machine. Fig. 2 is a longitudinal section through the machine. Fig. 3 is a cross-section taken on the line main Fig. 2. Fig. 4is an end view of the machine.

A is the tanning-cylinder, provided with a lid or door a in its side and having conical ends I). This cylinder is revoluble and is mounted in any approved manner, so that it may be revolved. The cylinderis preferably provided with bands or rings B, which run in grooved rollers O, secured on shafts c. The shafts c are journaled in a frame D, and one of the shafts is provided with a driving-pulley d for the driving-belt. The" cylinder is revolved by the frictional contact'of the rollers with the bands; but it may be revolved in any other approved manner. The ends I) of the cylinder are provided with radiating passages e and f, and E and F are circulating-pipes operatively connected with the said. passages e and f at the axis of the cylinder. The passages e and f. have holes Which com-. mu-nicate With the interior. of the cylinder near its periphery, and the tanning liquid is forced through these holes. The pipes E and F are connected to a circulating-pump G of any approved construction, and the liquid is driven upward through the pipe E, through the cylinder, and down the pipe F back to the pump.

His a heating-chamber which surrounds the pipe F at one place, and h represents steam heating-coils in this chamber; but any other approved heating devices maybe used to heat the tanning liquid.

- I isa test-chamber which surrounds the pipe F at one point. The pipe F has perforations 9 inside the chamber I, and a portion 55. of a hide of leather is placed in the test-chamber and is removed from time to time to observe the action of the tanning liquid Quit. The pipe F is also provided with a valve j, through which tanning liquid may be introduced or let out.

J is a cage arranged inside the cylinder and constructed of hoops and longitudinal bars provided with projections for engaging the hides-and securedtogether in any approved manner. The longitudinal bars of the cage slide in a grooved guide-ring K at the end of the cylinder nearest the inlet-pipe E. The other ends of the longitudinal bars of the cage slide in openings in a guide-plate M at '70 the other end of the cylinder nearest the outlet-pipe F.

A shaft N is journaled in the outlet end of the cylinder and is provided with a chainwheel 4?. for revolving it. This shaft N is provided with passages or holes 70, which connect the radial passages f with the outlet-pipe F, and the parts are connected together in any approved manner, so that the tanning liquid will not leak out.

A chain-wheel-O is secured on the drivingshaft near the driving-pulley d, and o is a drive-chain which passes over the wheels 0 and n and drives the shaft N faster than the cylinder isrevolved. 8

The guide-plate M is provided with holes m near its periphery and at other desired points for the passage of the tanning liquid,- and-P is an agitator secured on the shaft N inside the conical outlet end of the cylinder. The cylinderis kept about two-thirds full of the tanning liquid, and a portion of this tanning liquid is forced backward by the action of the agitator and the conical end of the cylinder against the hides nearest the outlet end 5 of the cylinder, so that a'local circulation is established at this end ofthe cylinder. This local circulation does not interferewith the general circulation of the tanning liquid; but

it renders the application of the tanning liq- ,uid more effective and uniform.

The cage is reciprocated longitudinally as it and the cylinder are revolved by any approved tappet mechanism.

' cylinder by the action of the agitator.

R is a tappetqwheel, which is secured on the shaft N and provided with tappet-rollers r, which engage with tappet-rollers 3, carried by the longitudinal bars of the cage. The tappet-wheel moves the cage in one direction, and it is moved in the reverse direction by a spring or springs S, carried by the guide-ring K. Each spring is secured to the ring K at one end and to the cage at its other end and is arranged so that the cage is pressed toward the tappet mechanism. Any approved tappet mechanism can be used, that shown being merely an illustration of one form of the same.

U is an automatic valve on the cylinder for the escape of gas, and V is a screw-cap for closing an outlet or inlet W on the cylinder. As many of these outlets or inlets as desired may be used, and they are outlets when at the bottom of the cylinder. As the cylinder revolves and they come to the top they can serve for inlets. The agitator may be placed in other positions besides that shown and should be placed in whichever position will enable it to work to the best advantage. The cylinder is revolved continuously in one direction, and the action of revolving it causes the cage to be revolved with the cylinder and also reciprocated longitudinally inside the cylinder. The tanning liquid being forced through the cylinder by the pump is agitated and circulated locally within the In this manner a constant motion of both the tanning liquid and the skins is maintained, so that the liquid is brought into close and intimate contact with the skins. The skins or other untanned leather are put inside the cage and are subjected to the action of the tanning liquid, as hereinbefore described, the action being kept up as long as desired.

By the use of this machine hides and skins are tanned and colored with great rapidity and at a very small cost, and the tanning action is Very uniform and permanent.

What I claim is-- l. The combination, with a cylinder, and means for revolving it; of a cage supported in the cylinder, a spring which presses the cage longitudinallyin one direction, and means for reciprocating the cage against the pressure of the said spring as the said cylinder is revolved, substantially as set forth.

2. The combination, with a cylinder, and means for revolving it; of a cage supported in the said cylinder, and means for reciprocating the said cage longitudinally as the said cylinder is revolved, substantially as set forth.

3. The combination, with a cylinder, and means for revolving it; of guides supported in the cylinder, and automatic tappet mechanism moving the said cage longitudinally in the said guides as the cylinder is revolved, substantially as set forth.

4:. The combination, with a cylinder, and means for revolving it; of a cage supported in the said cylinder, a spring for moving the cage in one direction, a tappet-wheel mounted concentric with the cylinder and moving the said cage in the opposite direction, and means for revolving the said tappet-wheel as the cylinder is revolved, substantially as set 'forth.

5. The combination, with a cylinder, and means for revolving it; of a cage supported in the cylinder, means for reciprocating the cage longitudinally as the'cylinder is revolved, and circulating-pipes which conduct liquid through the said cylinder and cage, substantially as set forth.

6. The combination, with a cylinder having conical ends provided with radial passages having openings near the periphery of the cylinder, of circulating-pipes connected with the said passages at the axis of the cylinder, a cage supported in the cylinder, and means for reciprocating the cage longitudinally as the cylinder is revolved, substantially as set forth.

7. The combination, with a cylinder, and circulating-pipes which conduct liquid longitudinally through the cylinder, of means for forcing back a portion of the liquid at the outlet end of the cylinder and establishing a local circulation at that point, substantially as set forth.

8. The combination, with a cylinder, and circulating-pipes which conduct liquid through the cylinder; of a plate arranged at the outlet end of the cylinder and provided with passages, an agitator arranged between the said plate and the outlet end of the cylinder, and means for revolving the said agitator, whereby a local circulation is established at the outlet end of the cylinder, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

T. S. OoHs, FRED. K. DAGGE'LT. 

